Groundwater contaminants choose one: a. are always toxic materials like arsenic, mercury, and lead. b. dissipate quickly into the groundwater reservoir and often do not pose a problem. c. like methane, arsenic, and salt may occur naturally in groundwater. d. are all eventually removed by rock and sediment acting as natural filters.

Try to answer all questions if possible i will take anything this is worth 21 ! ! 1. what rights do citizen's have in a monarchy? 2. what countries practice monarchy? 3. what is one advantage of a monarchy? 4. what is one disadvantage of a monarchy? 5. what rights do citizen's have in a dictatorship? 6. what countries practice dictatorship? 7. what is one advantage of dictatorship? 8. what is one disadvantage of dictatorship?